The Number

81389

Eighty-One Thousand Three Hundred and Eighty-Nine

In Base 5 Quinary Is

101010245

The numbers with a 5 subscript use Base 5 Quinary notation.

For more familiar numbers: See Eighty-One Thousand Three Hundred and Eighty-Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

81386
101010215
Eighty-One Thousand Three Hundred and Eighty-Six in Base 5 Quinary
81387
101010225
Eighty-One Thousand Three Hundred and Eighty-Seven in Base 5 Quinary
81388
101010235
Eighty-One Thousand Three Hundred and Eighty-Eight in Base 5 Quinary
81390
101010305
Eighty-One Thousand Three Hundred and Ninety in Base 5 Quinary
81391
101010315
Eighty-One Thousand Three Hundred and Ninety-One in Base 5 Quinary
81392
101010325
Eighty-One Thousand Three Hundred and Ninety-Two in Base 5 Quinary

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

8.1389e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000000434443142212331420232415

The reciprocal of 81389 in Base 5 Quinary.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 101010245 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Eighty-one thousand three hundred and eighty-nine is a composite number with 12 total factors (including 1 and itself).   See primes in Base 5 Quinary

A Composite

Composites have more than just these two factors.

Eighty-one thousand three hundred and eighty-nine is a composite number with 12 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number eighty-one thousand three hundred and eighty-nine has the following 3 prime factors:

7
125
Seven in Base 5 Quinary
11
215
Eleven in Base 5 Quinary
151
11015
One Hundred and Fifty-One in Base 5 Quinary

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

1252 · 2151 · 110151 = 101010245

Base Conversions

The number eighty-one thousand three hundred and eighty-nine in 35 different bases